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      <a id="vaset"></a>
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      <a id="IndexAvarSet" class="indexterm"></a>
      <div class="refnamediv">
        <h2>
          <span class="refentrytitle">vaset</span>
        </h2>
        <p>vaset — 
      Write value of into the current buffer of an a-rate variable by index.
    </p>
      </div>
      <div class="refsect1">
        <a id="idp160858032"></a>
        <h2>Description</h2>
        <p>
      Write values into the current buffer of an a-rate variable at the given
      index.  Useful for doing sample-by-sample manipulation at k-rate without
      using setksmps 1.

      </p>
        <div class="note" style="margin-left: 0.5in; margin-right: 0.5in;">
          <table border="0" summary="Note: Note">
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              <td rowspan="2" align="center" valign="top" width="25">
                <img alt="[Note]" src="images/note.png" />
              </td>
              <th align="left">Note</th>
            </tr>
            <tr>
              <td align="left" valign="top">
                <p>Because this opcode does not do any bounds checking, the user
        must be careful not to try to write values past ksmps (the
        size of a buffer for an a-rate variable) by using index values greater
        than ksmps.</p>
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              </td>
              <th align="left">Note</th>
            </tr>
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              <td align="left" valign="top">
                <p>In Csound6 this opcode does do bounds checking.</p>
              </td>
            </tr>
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        <p>
     </p>
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      <div class="refsect1">
        <a id="idp160936512"></a>
        <h2>Syntax</h2>
        <pre class="synopsis"><span class="command"><strong>vaset</strong></span> kval, kndx, avar</pre>
      </div>
      <div class="refsect1">
        <a id="idp160938560"></a>
        <h2>Performance</h2>
        <p>
      <span class="emphasis"><em>kval</em></span> - value to write into avar
    </p>
        <p>
      <span class="emphasis"><em>kndx</em></span> - index of the sample to write to the current
      buffer of the given avar variable
    </p>
        <p>
      <span class="emphasis"><em>avar</em></span> - a-rate variable to write to
    </p>
      </div>
      <div class="refsect1">
        <a id="idp160941968"></a>
        <h2>Examples</h2>
        <p>
      Here is an example of the vaset opcode. It uses the file <a class="ulink" href="examples/vaset.csd" target="_top"><em class="citetitle">vaset.csd</em></a>.

      </p>
        <div class="example">
          <a id="idp160943744"></a>
          <p class="title">
            <strong>Example 968. Example of the vaset opcode.</strong>
          </p>
          <div class="example-contents">
            <p>See the sections <a class="link" href="UsingRealTime.html" title="Real-Time Audio"><em class="citetitle">Real-time Audio</em></a> and <a class="link" href="CommandFlags.html" title="Csound command line"><em class="citetitle">Command Line Flags</em></a> for more information on using command line flags.</p>
            <pre class="programlisting">
<span class="csdtag">&lt;CsoundSynthesizer&gt;</span>
<span class="csdtag">&lt;CsOptions&gt;</span>
<span class="comment">; Select audio/midi flags here according to platform</span>
<span class="comment">; Audio out   Audio in    No messages</span>
-odac           -iadc     -d     <span class="comment">;;;RT audio I/O</span>
<span class="comment">; For Non-realtime ouput leave only the line below:</span>
<span class="comment">; -o avarset.wav -W ;;; for file output any platform</span>
<span class="csdtag">&lt;/CsOptions&gt;</span>
<span class="csdtag">&lt;CsInstruments&gt;</span>
<span class="ohdr">sr</span><span class="op">=</span>44100
<span class="ohdr">ksmps</span><span class="op">=</span>1
<span class="ohdr">nchnls</span><span class="op">=</span>2

	<span class="oblock">instr</span> 1	<span class="comment">; Sine Wave</span>
ifreq <span class="op">=</span> (p4 <span class="op">&gt;</span> 15 <span class="op">?</span> p4 <span class="op">:</span> <span class="opc">cpspch</span>(p4))
iamp <span class="op">=</span> <span class="opc">ampdb</span>(p5)

kenv <span class="opc">adsr</span> 0.1, 0.05, .9, 0.2

aout <span class="opc">init</span> 0
ksampnum <span class="opc">init</span> 0

kcount <span class="op">=</span> 0

iperiod <span class="op">=</span> <span class="ohdr">sr</span> <span class="op">/</span> ifreq

i2pi <span class="op">=</span> 3.14159 <span class="op">*</span> 2

<span class="olabel">loopStart</span><span class="op">:</span>

kphase <span class="op">=</span> (ksampnum <span class="op">%</span> iperiod) <span class="op">/</span> iperiod

knewval <span class="op">=</span> <span class="opc">sin</span>(kphase <span class="op">*</span> i2pi)

	<span class="opc">vaset</span> knewval, kcount,aout

	ksampnum <span class="op">=</span> ksampnum <span class="op">+</span> 1

<span class="octrl">loop_lt</span> kcount, 1, ksmps, <span class="olabel">loopStart</span>

aout <span class="op">=</span> aout <span class="op">*</span> iamp <span class="op">*</span> kenv

<span class="opc">outs</span> aout, aout
	<span class="oblock">endin</span>

<span class="csdtag">&lt;/CsInstruments&gt;</span>
<span class="csdtag">&lt;CsScore&gt;</span>

<span class="stamnt">i</span>1	0.0	2 440 80
<span class="stamnt">e</span>

<span class="csdtag">&lt;/CsScore&gt;</span>
<span class="csdtag">&lt;/CsoundSynthesizer&gt;</span>
</pre>
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        <p><br class="example-break" />
    </p>
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      <div class="refsect1">
        <a id="idp160948032"></a>
        <h2>See Also</h2>
        <p>
      <a class="link" href="vaget.html" title="vaget"><em class="citetitle">vaget</em></a>
    </p>
      </div>
      <div class="refsect1">
        <a id="idp160950080"></a>
        <h2>Credits</h2>
        <p>
      </p>
        <table border="0" summary="Simple list" class="simplelist">
          <tr>
            <td>Author: Steven Yi</td>
          </tr>
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        <p>
    </p>
        <p>New in version 5.04</p>
        <p>September 2006.</p>
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